Answer:
A
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
The profit made is equal to 2.25-2.25 which is 0.
Not much can be done without knowing what

is, but at the least we can set up the integral.
First parameterize the pieces of the contour:


where

and

. You have


and so the work is given by the integral

